In a single day, scientists announced three landmark geological discoveries: 700 fossils in China pushing back the origins of complex life, the lab-grown creation of dolomite solving a 200-year-old ...

Earth formed within such a precise “Goldilocks zone” for oxygen that a 5% change would have prevented life from emerging.

3. 25 Facts About Geologic Time That Made Our Brains Hurt 4. How Do We Know? A Glimpse into Geologic Sleuthing 5. Our Fleeting Moment in Deep Time 6. Frequently Asked Questions What if we told you ...